本文選題：隔震結(jié)構(gòu) + 振動臺試驗(yàn)�。� 參考：《西安建筑科技大學(xué)》2015年博士論文

【摘要】：由于摩擦系數(shù)的限制,摩擦滑移隔震技術(shù)早期主要被研究應(yīng)用到一些高寬比小、高度低的磚混砌體結(jié)構(gòu)中,對框架結(jié)構(gòu)的研究還較少。二硫化鉬具有摩擦系數(shù)小、承載能力高、使用壽命長以及溫度適應(yīng)范圍廣等優(yōu)點(diǎn),是一種理想的固體潤滑劑。文中首先以新型固體潤滑材料,即二硫化鉬涂層材料為主,設(shè)計(jì)并制作了一種新型滑移隔震裝置,同時(shí)采用MTS電液伺服試驗(yàn)系統(tǒng),進(jìn)行了新型摩擦滑移隔震支座的力學(xué)性能試驗(yàn),建立了相應(yīng)的力學(xué)分析和計(jì)算模型。試驗(yàn)和分析結(jié)果均表明,二硫化鉬材料涂層施工簡單,力學(xué)性能非常穩(wěn)定,摩擦系數(shù)較小(0.04~0.06),豎向承載力較高,是一種理想的摩擦滑移涂層材料;文中研發(fā)的新型滑移隔震裝置具有摩擦滑移隔震和限位等功能,構(gòu)造簡單,適用性強(qiáng),可應(yīng)用于實(shí)際工程。其次,建立了欠人工質(zhì)量模型的一致相似關(guān)系,并根據(jù)其設(shè)計(jì)制作了一個(gè)相似比為1/5的2跨5層框架模型結(jié)構(gòu),進(jìn)行了多種工況下安裝和未安裝文中研發(fā)的新型摩擦滑移隔震裝置的框架模型結(jié)構(gòu)模擬單向地震振動臺對比試驗(yàn),檢驗(yàn)了新型摩擦滑移隔震裝置的單向隔震和限位性能,探討了相應(yīng)的隔震和限位規(guī)律,提出了安裝新型滑移隔震裝置結(jié)構(gòu)的有限元分析和計(jì)算方法。單向振動臺試驗(yàn)和有限元分析結(jié)果均表明,文中研發(fā)的新型滑移隔震裝置的單向隔震和限位效果明顯,一般情況下,隔震結(jié)構(gòu)的地震加速度反應(yīng)比抗震結(jié)構(gòu)的減小約(30~50)%,層間剪力減小約(20~50)%,總位移反應(yīng)減少約(25~50)%。另外,考慮豎向地震作用對隔震結(jié)構(gòu)的影響,進(jìn)行了上述框架模型結(jié)構(gòu)單、豎向地震耦合作用時(shí)的模擬地震振動臺試驗(yàn)和有限元分析,對比分析了單、豎向地震耦合作用與相應(yīng)抗震結(jié)構(gòu)和單向隔震結(jié)構(gòu)的隔震效果和限位性能,探討了影響隔震效果的主要因素,提出了相應(yīng)的分析方法,同時(shí)進(jìn)行了水平雙向耦合地震作用下隔震結(jié)構(gòu)的有限元分析,研究了雙向水平地震作用對隔震結(jié)構(gòu)的影響。試驗(yàn)和有限元分析均表明,一般情況下,考慮豎向地震作用時(shí),結(jié)構(gòu)的隔震效果將減小50%左右,考慮雙向水平地震作用時(shí),結(jié)構(gòu)的單向隔震效果將降低約40%,但仍有較好的隔震效果,工程應(yīng)用時(shí)應(yīng)予以適當(dāng)考慮。最后,本文在摩擦滑移隔震結(jié)構(gòu)振動臺試驗(yàn)研究的基礎(chǔ)上,吸取國內(nèi)外的研究成果和實(shí)際工程建設(shè)經(jīng)驗(yàn),借鑒相關(guān)行業(yè)的標(biāo)準(zhǔn)、規(guī)范。給出了滑移隔震結(jié)構(gòu)設(shè)計(jì)的方法和建議,為摩擦滑移隔震實(shí)際工程設(shè)計(jì)應(yīng)用提供參考及技術(shù)支撐。
[Abstract]:Because of the limit of friction coefficient, friction slip isolation technology is mainly used in some brick-concrete masonry structures with small aspect ratio and low height in the early stage, and the research on frame structure is still few. Molybdenum disulfide is an ideal solid lubricant because of its small friction coefficient, high bearing capacity, long service life and wide range of temperature adaptation. In this paper, a new type of sliding isolation device is designed and fabricated with a new solid lubricating material, that is, molybdenum disulfide coating material. At the same time, the MTS electro-hydraulic servo test system is used. The mechanical properties of the new friction-slip isolation bearing are tested and the corresponding mechanical analysis and calculation model are established. The results of test and analysis show that the coating of molybdenum disulfide material is a kind of ideal friction slip coating material because of its simple construction, stable mechanical properties, low friction coefficient (0.04 ~ 0.06) and high vertical bearing capacity. The new sliding isolation device developed in this paper has the functions of friction sliding isolation and limit of position, simple structure and strong applicability, so it can be used in practical engineering. Secondly, the uniform similarity relation of the under-artificial quality model is established, and according to its design, a 2-span five-story frame structure with a similarity ratio of 1 / 5 is made. A comparative test of the frame model of a new type of friction-slip isolator developed in this paper under various working conditions is carried out to test the unidirectional isolation and limit performance of the new friction-slip isolator. The corresponding law of isolation and limit is discussed, and the finite element analysis and calculation method for the structure of new sliding isolation device are put forward. The results of unidirectional shaking table test and finite element analysis show that the unidirectional isolation and limit effect of the new sliding isolation device developed in this paper are obvious, generally speaking, The seismic acceleration response of the isolated structure is less than that of the seismic structure, the interstory shear force is reduced by about 20 / 50 and the total displacement response is reduced by about 25 / 50. In addition, considering the influence of vertical earthquake action on isolated structure, the shaking table test and finite element analysis of the frame model single and vertical earthquake coupling are carried out, and the single frame model is compared and analyzed. The vertical seismic coupling effect, the isolation effect and the limiting performance of the corresponding seismic structure and the unidirectional isolated structure are discussed. The main factors affecting the isolation effect are discussed, and the corresponding analysis method is put forward. At the same time, the finite element analysis of the isolated structure under the horizontal and bidirectional coupling earthquake is carried out, and the effect of the bidirectional horizontal earthquake on the isolated structure is studied. Both the test and the finite element analysis show that, in general, when vertical earthquake is considered, the isolation effect of the structure will be reduced by about 50%, and when the bidirectional horizontal earthquake is taken into account, the isolation effect of the structure will be reduced by about 50%. The unidirectional isolation effect of the structure will be reduced by about 40%, but there is still a good isolation effect, which should be taken into account in engineering application. Finally, on the basis of the experimental research on the vibration table of friction-slip isolation structure, the paper draws on the domestic and foreign research results and practical engineering construction experience, and draws lessons from the standards and specifications of the relevant industries. The design methods and suggestions of sliding isolation structures are given, which provide reference and technical support for the practical engineering design and application of frictional sliding isolation structures.
【學(xué)位授予單位】：西安建筑科技大學(xué)
【學(xué)位級別】：博士
【學(xué)位授予年份】：2015
【分類號】：TU352.12

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